Fast sea-going ship with a double bottom and a waterjet drive

Abstract

The invention relates to a high-speed, sea-going ship comprising a double hull and a water-jet drive, the latter consisting of at least one pump assembly for generating the water-jet and at least one drive motor for the pump assembly. According to the invention, the pump assembly and its drive motor are located outside the stern area of the ship by using, in part, the space in the double hull.

1. A fast sea-going ship with a hull comprising single side walls and double bottom walls having an upper bottom and an under bottom, comprising:
 a water jet drive having at least one pump assembly for generating a water jet and having at least one drive motor for driving the pump assembly, wherein 
 the pump assembly and the drive motor are located outside a stern area of the ship between the upper and under bottom of the double bottom of the ship, 
 wherein the drive motor for the pump assembly is an electric motor having at least in part HTSL windings, and 
 wherein each pump assembly having a coaxial exhaust gas segment on its water outlet side for discharging the ship's exhaust gases into the water jet. 
 
   
   
     2. The ship in accordance with  claim 1 , wherein the electric motor comprises an armature with HTSL windings. 
   
   
     3. The ship in accordance with  claim 1 , wherein the pump assembly is located in a single-part or multipart nacelle partly integrated into the double bottom, wherein the pump and the HTSL drive motor are connected via a drive shaft. 
   
   
     4. The ship in accordance with  claim 1 , wherein the pump assembly is located under a raised part of the ship's hull, wherein the pump and the HTSL drive motor are connected via a short drive shaft. 
   
   
     5. The ship in accordance with  claim 1 , wherein the water jet drive and a nacelle and the drive motor are arranged in a hull section of the ship. 
   
   
     6. The ship in accordance with  claim 5 , wherein the upper and under bottoms of the ship are a double bottom module which can be inserted when the ship is being built. 
   
   
     7. The ship in accordance with  claim 5 , wherein the hull section is located amidships or in the aft section of the ship. 
   
   
     8. The ship in accordance with  claim 1 , comprising a plurality of pump assemblies. 
   
   
     9. The ship in accordance with  claim 7 , comprising two or four pump assemblies arranged in pairs next to one another. 
   
   
     10. The ship in accordance with  claim 9 , wherein each pair of pump assemblies as regards its vertical position, is adapted entirely or partly to the slope of the ship's hull. 
   
   
     11. The ship in accordance with  claim 1 , wherein the pump assembly or a pair of pump assemblies is arranged inclined at an angle to the horizontal direction. 
   
   
     12. The ship in accordance with  claim 9 , wherein the pump assembly or a pair of pump assemblies is arranged inclined at an angle to the horizontal direction such that the water jet is inclined downwards. 
   
   
     13. The ship in accordance with  claim 12 , wherein the water jet is inclined between 1 and 8 degrees relative to the horizontal direction. 
   
   
     14. The ship in accordance with  claim 12 , wherein the water jet is inclined between 4 and 7 degrees relative to the horizontal direction. 
   
   
     15. The ship in accordance with  claim 1 , wherein the pump assembly or a pair is positioned outwards relative to a longitudinal direction of the ship. 
   
   
     16. The ship in accordance with  claim 1 , wherein the drive motor of the pump assembly obtains its electrical energy from a gas turbine generator. 
   
   
     17. The ship in accordance with  claim 16 , wherein the gas turbine generator is accommodated in an energy generation module. 
   
   
     18. The ship in accordance with  claim 16 , wherein the gas turbine generator is located above the motor and pump assembly area. 
   
   
     19. The ship in accordance with  claim 16 , wherein the gas turbine comprises a short exhaust line discharging into a coaxial exhaust nozzle segment. 
   
   
     20. The ship in accordance with  claim 16 , wherein the generator has HTSL windings. 
   
   
     21. The ship in accordance with  claim 1 , further comprising jet deflection elements for the water jets. 
   
   
     22. The ship in accordance with  claim 1 , wherein the water jets are controlled individually. 
   
   
     23. The ship in accordance with  claim 1 , further comprising a rudder propeller drive. 
   
   
     24. The ship in accordance with  claim 23 , wherein the rudder propeller drive is an electrical rudder propeller drive obtaining its electrical energy from fuel cells. 
   
   
     25. The ship in accordance with  claim 1 , wherein the control of the power of the water jets is matched to the control of the power of a propeller drive of the ship. 
   
   
     26. The ship in accordance with  claim 1 , wherein the ship is a navy ship, a frigate, a corvette, a fast patrol boat, a cargo ship, a passenger ship, a ferry, a RoPax ship or a large yacht.